Figure 25.2
Use the illustration above to answer the questions 4 and 5.
Consider the accompanying figure. Four of the following are true statements about the structure indicated by "D." Which statement is false?
A. It first evolved in arthropods.
B. It extends anteriorly into the head region.
C. It provides support for muscle contraction.
D. It is replaced in most adult vertebrates by the vertebral column.
E. It is one of the four exclusive features of chordates.
Answer: A
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In a human, the intestines need to form a barrier to prevent bacteria and other microbes from moving into the bloodstream from the gut. Which of the following would prevent bacteria from moving between intestinal cells?
A. anchoring junction B. gap junction C. plasmodesmata D. cell wall E. tight junction
The alternating contractions of the _____ and _____ ______ move the worm
Fill in the blank(s) with the appropriate word(s).
________ bind to mRNA and tRNA during translation and allow for polypeptides to be synthesized
A) Chloroplasts B) Ribosomes C) Nuclei D) RNA polymerases E) Chromosomes
Sexual reproduction requires __________.
A) meiosis B) fertilization C) spore formation D) meiosis and fertilization